Tractor-belt.



C. L. TOLLES.

TRACTOR BELT.

APPLICATION FILED DEC. 6. 1913. hmfi mm, Patented Apr.13,1915.

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TRACTOR-BELT.

ll.,lllilli,5tith Application tiled hcceniher ti, til it.

T (all whom it 121 (13 concern:

the it known that l, Guanine L. Tonnes, oitiiten of the United States, resident of lEau tjlaire, county of lien Claire, htate ot' Wiscousin, have invented certain new and useful improvements in Tractor-Belts, ot which the tollowing is a specification.

My invention relates to belts tor use in connection with traction machines and the object ot the invention is to provide a connecting means between the links ot the belt which will allow the links to turn freely upon one another and exclude dust and dirt troni the bearings between the links.

The invention consists generally in various constructions and combinations, all as described and particularly pointed out in the claims.

in the accompanying drawings torturing part ot this specification, Figure l is a side elevation of a portion ot a traction machine, and its belt, with my invention applied thereto. tip. 2 is a detail view ot a section of the belt, showing the preterred construction of the traction shoes theretor, llig. 3 is a plan view of a section ot the belt, ll ig. t is a sectional view on the line w-o: ot Fig. 2.

lo the drawing. 2 represents a portion oi the ironic ot the machine. having a bearing 3 tor a sprocket wheel t. The traction belt for this machine consists ot a series of links composed of plates 5, substantially tlattened in term and provided with a centrally arranged recess or opening 6 to receive the teeth of the sprocket wheel, and a hub 'l' at These hubs extend across oneend portion of each plate and each hub is adapted to ht into a recess 8 provided in the end oil the adjacent link. tin each side of the hub 7 at one end oil the link l provide hubs 9 between? which and the hub 7 recesses 10 are formed, and similar recesses it are provided between the hubs 9 and the outer edges of the links. The opposite end ot each link from the hub 'l' is provided with hubs l2 and 13 arranged in pairs on opposite sides ot the sprocket tooth opening and these hubs, when the links are assembled. are adapted to enter the recesses 10 and 11 and have openings theretln-ougzh to coincide with the openings in the hubs i and 9. into these openings a series of bushings it are inserted. one into each end of the hub 'i' and one into each of the llllllS on opposite sides of the hub 7. the

bushings fitting snugly within said hubs tpccttlcatlon oi Letter-a Patented Apr. 13, aerial-no. coarse.

and harinp; their end surfaces machined to torni a close, dust-proof joint between them. A l pin i5 is then inserted into the bushings and secured at one end to one of the outer hubs off each link by means of a pin it. This construction locks the pin l5 against rotation with respect to the link to which it is secured, but allows it to turn in the bushing's oil the other link and also allows the hubs oi the other link to turn on the pin T5. The ends of the pin to tit snugly within the bushings and entrance ot dust and dirt therein will be prevented and the abutting ends of the bushings bear closely against one remain in contact with one another and pre-- vent retuse material from being gathered up and carried around with the belt. The overlapping ends and 2t of the adjacent shoes have their overlapping surtaces curved on the are ot a circle whose center is coincident with the axis of the hinge between the two adjacent links, thereby permitting" these surtaces to slide one upon the other without becoming separated while the shoes are passin around the sprocket wheels. tn antitriction belt 22 is also preferably provided between the traction belt and the machine frame. I I

ll do not limit myself to the details ot the construction herein shown and described as the same may be varied in many particulars without departing from my invention.

.T claim as my invention:

it. it tractor elt composed ot a series ot' links, each having a central opening to receive the teeth oi a sprocket wheel, and a transverse, centrally arranged hub at the end oil said opening, said links also having alternating recesses and hubs upon opposite sides ot said central hub, the recesses of one link being adapmd to receive the opposite hubs of the adjacent link, a series of bushings fitting within said hubs and having abutting end surtacee torniing dust- Elli proof joints between said hubs, and'pins fitting within said bushings, means for securing said pins to a hub of each link, and traction shoes mounted on said links.

2. A tractor belt comprising a series of links, each having a central opening therein to receive the teeth of a sprocket wheel and a central hub at the end of said openings extending transversely of said link, each link having at one end a hub upon opposite side of said central hub and at the opposite end a pair of recesses on each side of the central hub to receive a pair of hubs of the adjacent link, a series of bushings fitting end to end within openings in said hubs and having their abutting ends bearing upon one another and forming a dust-proof joint, and pins fitting within said bushin and secured at one end to a hub of a lin and rotating with said hub and its link in the other bushings, and traction shoes carried by said links.

, 3. A tractor belt composed of a series of links, and having a" central longitudinal opening, to receive the teeth of a sprocket wheel, a series of hubs at each end of each link and a series of recesses between said hubs, pins passing through openings in said hubs and'hinging said links together, each link be also provided upon its under surface with a transverse web extending outwardly at right: angles substantially to the plane of the links and terminating in an elongated shoe which lies in a plane parallel, substantially, with the plane of the link.

4. A tractor belt composed of links each having a transverse web extending outwardly at right angles substantially to the plane of the link and terminating in an elongated shoe which lies in a plane parallel,

substantially, with the plane of the link, each link bein provided also at each end with a series of hubs having transverse openings with recesses between said hubs, the position of the hubs at one end corres ending with the position of the recesses at t e other end whereby the hubs upon the link extend into the recesses in the adjacent link, and transverse pins extending through said hubs forming therewith hinged'connections between said links.

5. A tractor belt composed of links havin their ends connected by a hinged joint and each link having a transverse web extending outwardly at right angles substantially to the plane of the link and terminating in an elongated shoe which lies in a plane parallel substantially with the plane of the link, the adjacent ends of the shoes overlapping and formed on the arc of a circle whose center coincides with the axis of the hinge between two adjacent links.

6. A tractor belt composed of a series of links, each comprising a supporting plate having a substantially fiat upper face, a transverse web midway between its ends, said web extending outward substantially at right angles to said flat face of the plate, and an elongated shoe formed integral with said web and lying parallel therewith, the adjacent ends of said plates having interengaging parts, and means for connecting the same, whereby the plates may swing about said connection as a pivot.

In witness whereof, I have hereunto set my hand this 28 day of November 1913.

CHARLES LYMAN TOLLES.

Witnesses:

CHARLES F. Comn, Roar. B. Bmoos. 

